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authorLibravatar Jeff Hostetler <jeffhost@microsoft.com>2017-04-14 19:12:28 +0000
committerLibravatar Junio C Hamano <gitster@pobox.com>2017-04-15 02:21:12 -0700
commita6db3fbb6e4ec11695e2a3af8bc2cb9119cb1941 (patch)
tree6eeb1de45587403bee39e7579585c57409d1346c /t
parentEleventh batch for 2.13 (diff)
downloadtgif-a6db3fbb6e4ec11695e2a3af8bc2cb9119cb1941.tar.xz
read-cache: add strcmp_offset function
Add strcmp_offset() function to also return the offset of the first change. Add unit test and helper to verify. Signed-off-by: Jeff Hostetler <jeffhost@microsoft.com> Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 't')
-rw-r--r--t/helper/.gitignore1
-rw-r--r--t/helper/test-strcmp-offset.c22
-rwxr-xr-xt/t0065-strcmp-offset.sh21
3 files changed, 44 insertions, 0 deletions
diff --git a/t/helper/.gitignore b/t/helper/.gitignore
index 758ed2e8fa..e7fe7ff598 100644
--- a/t/helper/.gitignore
+++ b/t/helper/.gitignore
@@ -26,6 +26,7 @@
/test-sha1
/test-sha1-array
/test-sigchain
+/test-strcmp-offset
/test-string-list
/test-submodule-config
/test-subprocess
diff --git a/t/helper/test-strcmp-offset.c b/t/helper/test-strcmp-offset.c
new file mode 100644
index 0000000000..4a45a54e92
--- /dev/null
+++ b/t/helper/test-strcmp-offset.c
@@ -0,0 +1,22 @@
+#include "cache.h"
+
+int cmd_main(int argc, const char **argv)
+{
+ int result;
+ size_t offset;
+
+ if (!argv[1] || !argv[2])
+ die("usage: %s <string1> <string2>", argv[0]);
+
+ result = strcmp_offset(argv[1], argv[2], &offset);
+
+ /*
+ * Because differnt CRTs behave differently, only rely on signs
+ * of the result values.
+ */
+ result = (result < 0 ? -1 :
+ result > 0 ? 1 :
+ 0);
+ printf("%d %"PRIuMAX"\n", result, (uintmax_t)offset);
+ return 0;
+}
diff --git a/t/t0065-strcmp-offset.sh b/t/t0065-strcmp-offset.sh
new file mode 100755
index 0000000000..7d6d21425f
--- /dev/null
+++ b/t/t0065-strcmp-offset.sh
@@ -0,0 +1,21 @@
+#!/bin/sh
+
+test_description='Test strcmp_offset functionality'
+
+. ./test-lib.sh
+
+while read s1 s2 expect
+do
+ test_expect_success "strcmp_offset($s1, $s2)" '
+ echo "$expect" >expect &&
+ test-strcmp-offset "$s1" "$s2" >actual &&
+ test_cmp expect actual
+ '
+done <<-EOF
+abc abc 0 3
+abc def -1 0
+abc abz -1 2
+abc abcdef -1 3
+EOF
+
+test_done